<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>波浪div动画效果</title>
    <style>
        *{
            font-family: '微软雅黑', sans-serif;
            box-sizing: border-box;
        }
        body{
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: black;
            min-height: 100vh;
        }
        .container{
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .container .box{
            position: relative;
            width: 300px;
            height: 400px;
            color: #fff;
            /* display: #fff; */
            display: flex;
            justify-content: center;
            align-items: center;
            -webkit-box-reflect: below 15px linear-gradient(transparent,transparent,rgba(0,0,0,0.2));
        }
        .container .box:hover{
            color: #000;
        }
        .container .box:hover:before{
            background: #fff;
            transition: 0.5s;
        }
        .container .box::before{
            content: '';
            position: absolute;
            left: -10px;
            top: -10px;
            width: 100%;
            height: 100%;
            border: 4px solid #fff;
            background: #000;
            filter: url(#wavy);
        }
        .container .box::after{
            content: '';
            position: absolute;
            left: -10px;
            top: -10px;
            width: 0%;
            height: 100%;
            border: 4px solid #fff;
            border-right: none;
            background: rgba(255, 255, 255, 0.1);
            filter: url(#wavy);
        }
        .container .box .content{
            position: absolute;
            padding: 20px;
            text-align: center;
            transition: 0.5s;
        }

        svg{
            width:0;
            height:0
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="box">
            <div class="content">
                <h2>Water Wave Div</h2>
                <p>
                    挫折之花，绽放于与命运的抗衡。司马迁因秉笔直书，“不溢美，不隐恶”，而遭受敷刑，然而他在狱中却坚强的与命运作斗争，面对挫折，他选择了勇敢；面对挫折，他选择了发愤；面对挫折，他选择了秉笔直书。终于，他“着成信史照尘寰”，留下了千古美名！让挫折之花绽放了两千年！
                </p>
            </div>
        </div>
    </div>
    <svg>
        <filter id="wavy">
            <feTurbulence x="0" y="0" baseFrequency="0.02" numOctaves="5" seed="2">
                <animate attributeName="baseFrequency" dur="60s" values="0.02;0.05;0.02" repeatCount="indefinite"></animate>
            </feTurbulence>
            <feDisplacementMap in="SourceGraphic" scale="30"></feDisplacementMap>
        </filter>
    </svg>
</body>
</html>